Method next_back

arrow-buffer/src/util/bit_iterator.rs:147–156

(&mut self)

impl DoubleEndedIterator for BitIterator<'_> {
    fn next_back(&mut self) -> Option<Self::Item> {
        if self.current_offset == self.end_offset {
            return None;
        }
        self.end_offset -= 1;
        // Safety:
        // offsets in bounds
        let v = unsafe { get_bit_raw(self.buffer.as_ptr(), self.end_offset) };
        Some(v)
    }

    fn nth_back(&mut self, n: usize) -> Option<Self::Item> {
        // Check if we can advance to the desired offset.